In the context of a project with multiple international stakeholders and a new technology implementation characterized by uncertainties, a shared collaboration platform is the most effective tool for stakeholder engagement. This platform allows for real-time collaboration, transparent sharing of information, and collective problem-solving, which are essential in managing ambiguities and aligning end-user expectations. It provides a centralized space for communication, document sharing, and progress tracking, which is crucial for keeping stakeholders from various countries engaged and informed.
References: = The choice of a shared collaboration platform is supported by the PMP's emphasis on effective communication methods to manage stakeholder engagement, which includes the use of such platforms among other tools